I know that the future holds many problems with plugs in standard U.S. outlets and the new standard, seen that the trend is that there are fewer and fewer outlets that accept the American standard in Brazil. I also know that I will not give up so early in the various imported electronics using the US standard. So, instead of buying just one, ordered the 10 Power Plug Adapters Redondo drawing, being assured at least for a while.

Note that I already knew these adapters, because had already acquired two adapters of these last year, I used to connect the source of laptop power, the camera battery charger and charger Dingoo A-320, traveling to Spain, through Portugal. Both countries use the jacks to plug Schuko (Type F, EEC 7/4), incompatible with US standard plugs (Type A and Type B), but compatible with plugs type C (EEC 7/16, Europlug), which is the European standard without earth pin, and also compatible with the new Brazilian standard plugs in where the ground pin is not present, which is precisely the case of making the adapter.